Radiator.



C. A. ELIGH.

RADIATOR.

APPUCATION FILED MAR. 29. l9l5.

Patented Mar. 26, 1918.

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C. A. ELIGH.

RADIATOR.

APPLICATION FILED MAR.29. 1915.

1 figfifig. Patented Mar. 26, 1918,.

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CHARLES A. ELIGH, OF DETROIT, MICHIGAN, ASSIGNOR TO LONG MANUFACTURING COMPANY, OF DETROIT, MICHIGAN, A CORPORATION.

RADIATOR.

Specification of Letters Patent.

Patented Mar. 26, 1918.

Application filed March 29, 1915. Serial No. 17,852.

To all whom it may concern:

Be it known that 1, Cinemas A. ELIGH, a

citizen of the United States, residing at Deing the water in automobiles and one of its diator may have this graceful form withoutinjuring its efiiciency. Another object is to objects is to make a radiator of more pleasmg form than those now in use; another obect is to arrange the parts so that the rasimplifV the parts and enable them to be manufactured with a minimum waste of material. Another object is to provide the largest possible radiating surface.

In the accompanying drawings, Figure 1 shows a strip of metal with one edge reinforced by a wire, and Fig. 2 shows anenlarged end view of the strip. Fig. 3 shows the same strip after its edge has been corrugated, the three diagrams at the right of the figure showing how the corrugations die out as they approach the wired edge. Fig. 4t shows the strip after it has been pierced to receive the tubes. Fig. 5 shows a similar strip in which the corrugations take the form of folds, this being diagrammatically illustrated further in Fig. 6. Fig. 7 shows a modified manner of reinforcing the edge. Fig. 8 is a front elevation, Fig. 9 a side elevation and Fig. 10 is a plan of my radiator.

Similar numerals refer to similar parts in all of the views.

After reinforcing one edge the strip 25 is given a curvature in its own plane by corrugating the other edge, using the open form of corrugation shown in Fig. 4 or-the folded form shown in Fig. 5. The fin is then placed in a jig and apertures 26 pierced in it. Corrugating the fins has two advantages: It affords more radiating surface than would a flat fin and it enables the fin to be made from a rectilineal strip, which economizes material and simplifies the process of reinforcing the edge. The apertures 26 are arranged in parallel rows having a curvature corresponding to the fin, but they are so spaced that they coincide with parallel straight lines as indicated in Fig. l. The radiator comprises a number of these fins through which the water tubes 27 pass (see Figs. 8 and 9), the tubes being connected to the usual transverse passages at top and bottom. The apertures 26 are of such form that their edges touch the tubes all around, regardless of their position with reference to the corrugations. This symmetry is easily attained by piercing the fins after they are corrugated, while it would be difiicult of attainment if the piercing preceded the corrugating.

The corrugations cause local eddies of air around the tubes, while the arrangement of the apertures shown in Fig. 4 gives a free passage for the air in a direction parallel to the movement of the radiator notwithstanding its curved contour. It therefore permits the radiator to have the graceful form shown in Figs. 8, 9 and 10 without affecting its efficiency.

I am aware that modifications may be made in the several parts of my invention without departing from the substance or exceeding the scope of the appended claims. Said claims are as follows:

1. A radiator fin consisting of a strip of metal with corrugations along one edge which gradually die out from their deepest portion along the said edge as they approach the other edge, and having apertures through the corrugated portion to receive the tubes. 7

2. A radiator fin consisting of a strip of metal having a curvature in its own plane, its inner edge having corrugations which diverge from a common center and die out as they approach the outer edge of the strip, and having apertures through the corrugated portion to receive the tubes.

3. A radiator fin consisting of a corrugated strip of metal having a curvature in its own plane, and having apertures arranged in parallel rows with a curvature simllar to that of the strip, the apertures being so spaced in said rows that they coincide with certain parallel straight lines, a plurality of said fin corrugations bein obliquely disposed with respect to said ines where the said corrugations are adapted to cau e air eddies around the tubes.

l. A radiator fin consisting of a strip of metal with corrugations along one edge which die out as they approach the other edge, and having apertures to receive the tubes, said apertures being located without regard to whether or not they pass through the corrugations, but so shaped that the entire margin thereof will touch the tube which passes through it.

5. A radiator fin consisting of a strio of metal having a curvature in its own p ane, the outer edge thereof being reinforced by a Wire, the inner edge having corrugations which die out as they approach the outer edge, and having apertures arranged in parallel rows with a curvature similar to that of th strip, the apertures being so spaced in said rows that they may coincide with certain parallel traight lines and so shaped that the entire margin of each aperture will touch the tube which passes through it.

6. A radiator comprising aplurality of tubes arranged in parallel curved rows, the tubes being so spaced in said rows that they coincide with certain parallel straight lines, and fins through which the tubes pass, said fins having a plurality of obliquely disposed corrugations, said tubes being joined to the fins by lines of contact longer than the perimetrical dimensions of the tubes.

7 A radiator comprising a plurality of parallel corrugated strips of metal having a curvature in their own plane, with apertures arranged in parallel rows with a curvature similar to that of the strips, but so spaced in said rows that they coincide with certain parallel straight lines, certain of aid cornigations in said strips being obliquely disposed with respect to the aforesaid straight lines, and tube passing through said apertures, said apertures being indiscriminately located with reference to the corrugations, thereby making the length of the lines of contact with the tubes unequal but longer than the perimeters of the tubes.

8. A radiator comprising a plurality of strips of metal having a curvature in their Gopie 013 this patent may be obtained for own plane, with oblong apertures with rounded ends arranged in a plurality of parallel rows with a curvature similar o that of the strips, but so spaced in said rows that they coincide with certain parallel straight lines, the 1onoaxesof said apertures being also parallel to said straight lines, and tubes conforming in contour to' and passingv through said apertures.

9. A radiator fin consistin of a strip of metal having a urvature in its own plane, the'inner edge having corrugations which die out as they approach the outeredge, and having apertures arranged in parallel rows with'a. curvaturesimilar to that'55 of the strip the apertures being so Spaced in said rows that they coincidewith certain parallel straight lines and'being placed indiscriminately 'witlrrespect' to the corru-' gations but being so shaped that theentire 7 margin thereof will touch the tubes which pas therethrough. V a

1,0. A radiator comprising a plurality of superimposed fins each havlng the form of p a segmentof an annulus, the opposite ends of said annularsegmental fins terminating at the sides of the radiator, a pluralityof rows of tubes passing through said fins, said tubes being ll disposed concentric to'a common point and being so spaced in said rows that they coincide with certain straight lines parallel to the median line of the radiator.

Intestimony whereof I afliX my signature in the presence of two subscribing witnesses. A V 7 CHARLES A. ELIGH.

Witnesses:

J. L. DRYDEN, A. L. SWANK.

five cents each, lby addr essi ng the: (lomm issioner of Patents, Washington, D. 0. v 

